[llvm] edea974 - [ValueTracking] Avoid FP cast constant expressions

[Nikita Popov via llvm-commits]

Author: Nikita Popov
Date: 2023-11-06T14:19:32+01:00
New Revision: edea9743490ec01dca2d70f343f1544e7ead4915

URL: https://github.com/llvm/llvm-project/commit/edea9743490ec01dca2d70f343f1544e7ead4915
DIFF: https://github.com/llvm/llvm-project/commit/edea9743490ec01dca2d70f343f1544e7ead4915.diff

LOG: [ValueTracking] Avoid FP cast constant expressions

Use the constant folding API instead.

Added: 
    

Modified: 
    llvm/lib/Analysis/ValueTracking.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp
index 2458c1cb9f8ec1d..ff14da4c1e73e94 100644
--- a/llvm/lib/Analysis/ValueTracking.cpp
+++ b/llvm/lib/Analysis/ValueTracking.cpp
@@ -7880,22 +7880,22 @@ static Value *lookThroughCast(CmpInst *CmpI, Value *V1, Value *V2,
     }
     break;
   case Instruction::FPTrunc:
-    CastedTo = ConstantExpr::getFPExtend(C, SrcTy, true);
+    CastedTo = ConstantFoldCastOperand(Instruction::FPExt, C, SrcTy, DL);
     break;
   case Instruction::FPExt:
-    CastedTo = ConstantExpr::getFPTrunc(C, SrcTy, true);
+    CastedTo = ConstantFoldCastOperand(Instruction::FPTrunc, C, SrcTy, DL);
     break;
   case Instruction::FPToUI:
-    CastedTo = ConstantExpr::getUIToFP(C, SrcTy, true);
+    CastedTo = ConstantFoldCastOperand(Instruction::UIToFP, C, SrcTy, DL);
     break;
   case Instruction::FPToSI:
-    CastedTo = ConstantExpr::getSIToFP(C, SrcTy, true);
+    CastedTo = ConstantFoldCastOperand(Instruction::SIToFP, C, SrcTy, DL);
     break;
   case Instruction::UIToFP:
-    CastedTo = ConstantExpr::getFPToUI(C, SrcTy, true);
+    CastedTo = ConstantFoldCastOperand(Instruction::FPToUI, C, SrcTy, DL);
     break;
   case Instruction::SIToFP:
-    CastedTo = ConstantExpr::getFPToSI(C, SrcTy, true);
+    CastedTo = ConstantFoldCastOperand(Instruction::FPToSI, C, SrcTy, DL);
     break;
   default:
     break;